Timothy holland



(No Model.) 7 2 Sheets-Sheet 1. T. HOLLAND.

VALVE.

No. 282,894. Patented Aug. 7, 1883. 8

w w w n v 1 (No Model.) 2 She ets-Sheet 2. T; HOLLAND.

VALVE.

Patented Aug; 7, 1883.-

N. FEVERS. Pholo'Lhhogrnphar. Washinglun. n. cy

NITED STATES tries.-

. PATENT VALVE.

SPECIFICATION forming part of Letters Patent No. 282,894, dated August7, 1883 Application filed October 17, 1882. Renewed Jnlyfl, 188' (Nomodel.)

To all whom it may concern: Be it known that I, TIMOTHY HOLLAND, citizenof the United States, residing at Troy, in the countyof Rensselaer andState of New York, have invented new and useful Improvements in Valves,of which the following is a specification.

The object of this invention is to provide a reversible valve whichshall have two faces so formed that after one face and the seat adaptedtherefor 11. ye become worn the valve can be reversed and its remainingface be used without requiring any regrinding of the foriner seat, theseat used for the said second face being necessarily formed, in thefirst instance, in making the seat for the first-mentioned valve-face.

To such end my invention consists in a reversible valve possessing thepeculiarities of construction hereinafter described, whereby after oneface of the valve becomes worn it can be reversed and the opposite facebrought into use; also, in providing the reversible Valve with anannular flange between its two faces, so as to afford a stop which shalllimit the depth to which the valve can be inserted in its holder; also,in a holdei adapted to e11- gage and hold the valve with either face ofthe latter exposed; also, in the construction and in the organization ofparts, all fully shown in the annexed drawings, in which- Figure 1 is acentral section through avalve constructed in accordance with myinvention. Fig. 2 is a part section and a part elevation thereof. Fig. 3represents the double valve. Fig. 4 represents all of the-partsdetached.

A indicates the shell,which is provided with the water and steampassages, as usual.

0 indicates the head, which is screwed into the top of the shell andprovided with a screwthreadedbore,withinwhichthescrew-threadedvalve-stem D works. A cap-nut, E, is fitted upon the head, and serves asan ordinary stuffing-box for the valvestem.

The reversible valve F consists of a cylindrical body of metal, havingat one side a convex projection, f, which is adapted to constitute anacting side of the valve when pre sented to the valve-seat. In theopposite side of the said cylindrical body of metal is a recess, f, .inwhich is received a washer, G, of

metal or some elastic material, said washer being held within thisrecess or seat by means of a screw, H, passing through the center of thewasher and screwed into a screw-threaded socket in the said'me tal body.This washer constitutes the remaining opposite face of the reversiblevalve, and is to be employed as hereinafter described.

I indicates the valve-holder, which consists ofan.internally-screw-threaded cap or collar loosely fitted upon theend-of the valve-stem. The cylindrical metal body designated as thereversible valve F is provided with two peripheral sets ofscrew-threads, K and L, said two sets being separated by an annularflange, M, so that when this double valve is fitted into its holder itcan be screwed up to said annular flange, which limits the extent towhich the valve can be inserted in the collar. This insures accuracy ofadjustment, since the flange M serves as a stop which limits the depthto which the valve-body can be inserted in the collar.

It will be seen that these sets of screwthreads are respectively broughtinto use according to-which face of the valve is to be used. In thepresent instance the cap or collar com posing the valve-h0lder I isprovided with an opening, I, through which the valve stem passes. Thevalve-stein has a head, 2', 011 its lower end, and as said head is belowthe top of the cap or collar the latter will be held up on thevalvestem. The valvestem could, however, be screwed into the cap, or itcould be connected therewith in other ways-as, for example, it could behooked to the same. As the collar or cap I has internal screw-threads orretention-grooves, it is adapted to receive and engage either end of thedouble valve without alteration. The valve might be otherwise locked inthe collar; but that shown is regarded as the best mode of connectingthe two. The adaptation of the valve-seat to either form of valve-faceis attained in the simplest possible manner. Thus for the face formed bythe washer the upper edge of the annular flange N, around an opening, a,in a partition, 92, located in the shell, serves as a seat, while forthe convex valve-face the inner edge and wall of said -flange serve alike purpose.

It will thus be seen that after the valve-face formed by the washerbecomes worn, instead of rendering a new valve necessary the valvepiececan be reversed, so as to bring its convex face into service. on thisdouble valve is cut away at opposite sides, as at m, so that it can begrasped by a wrench or other like tool in unscrewing it from or screwingit into its seat. In screwing or unscrewing this double valve thevalve-stem can be turned so as to bring the valve-holder well up intothe head and hold it therein while the Valve is being turned, or thevalve-stem can be lowered and the parts then manipulated.

Having thus described my invention, what I claim is- 1. The combinationof a valve-casing having its interior partition provided with anaperture the upper edge of which is constructed to form two valveseats,a valve-holder composed of a cap or collar, a valve-stem, to the lowerend of which the valve-holder is swiveled, and a reversible valvedetachably connected with the holder and provided withoppositevalve-faces, said valve being adapted to be disconnected from itsholder, reversed, and secured in its reversed position to the holder,for bringing either of its valve-faces against one of the valve seats,substantially as described.

2. The combination of a valve-casing having its interior partitionprovided with an opening the upper edge of which is constructed to formtwo valve-seats, a valve-holder composed of an internal]y-threaded capor collar, and an The annular flange M externally-threaded valve havingtwo opposite valve-faces, and adapted to be disconnected from thevalve-holder, reversed, and secured in its reversed position to theholder, to' bring either of its valve-faces against one of thevalveseats, substantially as described. I

3. The combination, with the valve-casing providedwith a projectingflange surrounding the opening in the partition, of a valve-holder and areversible valve detachably connected with the holder, and provided withone valveface adapted to rest upon the flange, and another valve-faceadapted to fit in the partitionopening, substantially as described.

4. The combination, with a valve casing having a partition provided withan opening the upper edge of which is constructed to form twovalve-seats, of a valve-holder and a reversible valve detachablyconnected with the holder, and having a flat face and an opposite convexface, substantially as described.

' 5. The reversible valve provided with an annular flange between itstwo faces, said flange serving as a stop to limit the extent to whichthe valve can be inserted in its holder, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

TIMOTHY HOLLAND. XVitnesses:

JNo. P. OBRIEN, SIDNEY SMITH.

